The best sunglasses for backpacking block 100% of UV, wrap close to your face, weigh next to nothing and survive being sat on at the bottom of a pack. Most trail favourites hit three of those four. Foldable frames like ours at ROAV Eyewear are built for the fourth: they pack flat, so they stay in your pocket instead of getting crushed. Below, we compare six real options and show you how to pick for your own route.
TL;DR
- Check the label first: look for “UV400” or “100% UV protection”. Health Canada says price and lens darkness tell you nothing about protection.
- Choose close-fitting or wraparound frames. They block more stray light from the sides, which matters on exposed ridges and lake shores.
- Polarized lenses cut glare off water and wet rock, but they are not a UV rating, and some mountaineers skip them on ice.
- Snow, glaciers and high altitude may call for category 4 lenses; most fashion sunglasses are category 3.
- If pack space and breakage worry you more than sport-grade optics, a foldable pair such as ROAV’s slips into a pocket and avoids a bulky hard case.
Table of Contents
- What actually matters on a multi-day trip
- Six sunglasses for backpacking compared
- Our perspective: the best pair is the one you will actually wear
- Choosing by the kind of trip
- Try a foldable pair on your next trip
- A pre-trip checklist
- FAQ
- Sources
What actually matters on a multi-day trip
Backpacking is hard on eyewear. You sweat, you drop things, you pack and unpack every day, and you spend hours above the tree line. Four features decide whether a pair earns its weight.
UV protection comes before everything else
Health Canada recommends lenses labelled UV400 or 100% UV protection, which covers UVA and UVB up to 400 nanometres. Its testing of more than 200 pairs found that sunglasses priced above $21 regularly met international UV standards, so a bigger price tag buys optics, frame material or a brand, not basic safety. The Canadian Association of Optometrists makes the same point: you cannot judge UV protection from price, colour or darkness.
Darkness is worth a second look. Health Canada warns that dark lenses without UV protection can be worse than no sunglasses, because your pupils open wider and let more radiation in. If you want a refresher on what the label means, this explainer on UV400 sunglasses covers the basics, and our own five quick checks show how to confirm it at home.
UV also doesn’t take days off. REI notes that exposure happens in every season and on cloudy days, so overcast mornings on the trail still count.
Fit and coverage
Health Canada and the Canadian Association of Optometrists favour close-fitting or wraparound styles for protection against UV that sneaks in around the edges. McGill’s Office for Science and Society also advises favouring wraparounds. On trail, fit has a second job: frames that slide down your nose every time you look at your feet get left in the pack, and a pair in the pack protects nothing.
Lens category and tint
REI explains that most fashion sunglasses are category 3, while high-altitude or snow-heavy terrain often calls for category 4 to handle reflected UV. Photochromic lenses are another trap for travellers: they can struggle to darken inside vehicles, because windshields block the UV that triggers the change. If your trip includes long shuttle rides to the trailhead, don’t count on them to darken en route. For colour choices, see our guide to lens colour.
Polarized or not
Polarization cuts glare from water, wet rock and snow. It is not a UV standard, and Switchback Travel notes some hikers avoid it for technical terrain such as glaciers, because it can hide ice patches you need to see. For most three-season trails in Canada, from the West Coast Trail to the Rockies, polarized is a comfortable default. If you’re weighing it against mirrored lenses, we break that choice down by activity, and our Canadian polarized guide goes deeper.
Six sunglasses for backpacking compared
We don’t sell the trail-sport pairs below, so we have kept this to what independent reviewers say and to the trade-offs you will feel in a pack. Prices vary by retailer and change often, so check current Canadian pricing before you buy.
| Pair | Best for | Strength | Trade-off |
|---|---|---|---|
| Smith Lowdown 2 ChromaPop | All-round trail use | Polarized lenses that handle shade, ridges and wet rock | Rigid frame takes pack space |
| Oakley Flak 2.0 | Durability | Replaceable lenses, true-to-life optics | Bulkier, sport look |
| Julbo Explorer 2.0 | Snow and altitude | Side shields, photochromic lenses | Not for town or casual wear |
| Smith Parallel 2 | Ultralight packing | Light and packable | Less coverage than shielded frames |
| Goodr OG | Tight budgets | Inexpensive, easy to replace | Less refined optics |
| ROAV foldable frames | Pocket carry, travel and trail-to-town | Fold to 8.5mm, screwless hinge, polarized UV protection | Not a glacier or category 4 tool |
Smith Lowdown 2 ChromaPop
The Hiking Tribe names the Lowdown 2 its best overall, because it copes with the four conditions most hikers cycle through: forest shadow, exposed ridge, reflective rock and shallow snow. Bike Hike Safari rates it the best pick for backpacking, with a frame light enough to disappear on multi-day trips. It is a rigid frame, so you’ll want a hard case or a sunglasses pocket.
Oakley Flak 2.0
The same reviewer picks the Flak 2.0 as the best overall for long days, citing durability, true-to-life optics and replaceable lenses. If you tend to scratch lenses on scrambles, replaceable lenses are a real advantage. The cost is bulk and a sporty look that stays on the trail.
Julbo Explorer 2.0
The reviewer’s mountaineering choice, with side shields and photochromic lenses for snow glare and altitude. Remember the windshield caveat above: photochromics won’t have darkened when you step out of the shuttle. This is a specialist pair for high, bright terrain rather than a daily one.
Smith Parallel 2
The ultralight pick for thru-hikers counting grams. It is a fair choice if weight is your top criterion and you will carry a case.
Goodr OG
The budget pick. Given Health Canada’s finding that price does not decide UV safety, a cheaper pair that is clearly labelled UV400 is a sound way to protect your eyes. Check the label rather than trusting the brand, and expect plainer optics.
ROAV foldable frames
Our frames use a patented, screwless micro hinge. The Modern Dispatch reports they fold down to 8.5mm, slim enough to slip into almost any space where a rigid case would be impractical. They come with a waterproof pouch, polarized UV protection and a lightweight, ultra-durable build, and because there are no screws, there is no tiny part to loosen on day four.
Their strength is the pack-and-travel side of backpacking: flights, hostel bag rummaging, town days between trail sections. We will be straightforward about the limit, too. If you are heading onto a glacier, you want a category 4 lens and side shields, which is a specialist job. For everything else, a foldable pair that is always in your pocket beats a better pair left at the bottom of the bag.
Our perspective: the best pair is the one you will actually wear
We started from a simple annoyance: sunglasses are the item most likely to get crushed, forgotten or lost on a trip, because they are awkward to carry. A bulky case eats space, so people toss glasses loose in a side pocket, and then they scratch or snap.
That is why we built around a micro hinge that folds the frame thin enough for a pocket. Over 100,000 customers have chosen the design for travel and everyday carry, and what we hear most is that people wear them more because carrying them is effortless.
Our advice for backpackers is plain. Decide your terrain first. Above the snow line, buy a specialist category 4 pair. For forest, alpine meadows, coast and desert trails, a foldable polarized pair with a UV400 rating covers you, and it travels better. Many of our customers carry one pair on the trail and wear the same pair in the city afterwards.
— Thomas
Choosing by the kind of trip
Three-season trails and national park routes
Think Banff, Gros Morne or the Bruce Trail. Mixed shade and open ridgeline suit polarized lenses with a close fit. Any pair from the table works, so choose on weight and how you carry it.
Coastal and lake routes
Water glare is where polarization earns its keep. If you paddle or portage, read our three specs for water sports sunglasses. Float and retention matter more here: a dropped pair in a lake is gone.
High altitude, snow and glaciers
Choose category 4 lenses, side shields and a strap. Consider skipping polarization for glacier travel, as Switchback Travel suggests. Our foldables are not designed for this.
Hot, bright destinations
On a long trip through high-UV places, packability matters. See our foldable UV400 picks for high-UV travel and, for dust and bush, our safari guide.
If you wear prescription glasses
You have three routes: prescription sunglasses, clip-ons, or contacts with plain sunglasses. This guide to vision correction on the water shows how people handle glasses in wet, active conditions, and the same logic of secure fit applies on a river crossing. We also make prescription eyeglasses with the same foldable hinge, so your spare pair weighs little in the pack.
Try a foldable pair on your next trip
If pack space and breakage are your pain points, browse our foldable sunglasses. Each pair has polarized UV protection, a screwless frame and a waterproof pouch. Looking for a specific shape? Start with the SKYLANDER Black | Moonrise, the INGRID Black | Sunset or the NESTOR Black | Light-blue. Our fuller backpacking sunglasses guide has a packing checklist.
A pre-trip checklist
- Find the UV400 or 100% UV protection label on the hangtag. REI advises that if it isn’t printed there, you should choose a different pair.
- Put them on and shake your head. They should not slide.
- Check coverage: look for a wrap or a close fit, not a flat, small lens.
- Match the lens to terrain: category 3 for most trails, category 4 for snow and altitude.
- Decide where they live on the trail: a chest pocket, a hip-belt pocket or a case clipped to a strap. Never loose at the bottom of the bag.
- Carry a microfibre cloth. Sunscreen and sweat smear lenses fast.
FAQ
What type of sunglasses are best for hiking?
Choose a UV400 or 100% UV protection label, a close or wraparound fit and a lightweight frame that stays put when you sweat. Polarized lenses help with glare off water and rock. Pick category 3 for most trails and category 4 for snow or high altitude.
Are polarized sunglasses necessary for backpacking?
Not necessary, but useful. They cut glare from water, wet rock and snow, which reduces eye strain over a long day. They don’t add UV protection, and some mountaineers avoid them on glaciers because they can hide ice patches.
Do expensive sunglasses protect better?
No. Health Canada’s tests of over 200 pairs found that sunglasses above $21 regularly met international UV standards. Higher prices usually reflect brand, optics or frame materials, so check the UV400 label rather than the price tag.
Can foldable sunglasses be durable enough for the trail?
It depends on the hinge. Ours use a screwless micro hinge, so there are no small screws to work loose, and the frames fold to 8.5mm for pocket carry. For glaciers or extreme altitude, a specialist category 4 pair with side shields is the better tool.
Sources
- Sunglasses, Health Canada
- UV and Eye Protection, Canadian Association of Optometrists
- How to Choose Sunglasses, REI Expert Advice
- The 8 Best Sunglasses of 2026, REI Expert Advice
- Looking at the Science of Sunglasses, McGill Office for Science and Society
- Best Sports Sunglasses, Switchback Travel
- Best Polarized Hiking Sunglasses, The Hiking Tribe
- Best Hiking Sunglasses for Backpacking, Bike Hike Safari
- ROAV Eyewear Review 2026, The Modern Dispatch